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富钼组成ZrMo2-xWxO8(x=0.2, 0.4, 0.6, 0.8)立方相转变为三方相的动力学分析

The kinetics analysis of the cubic to trigonal phase transformation of Mo-rich ZrMo2-xWxO8

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【作者】 黄令马辉赵新华

【Author】 Ling Huang1 , Hui Ma2 , Xin-Hua Zhao1* 1 Department of Chemistry, 2 Analytical and Testing Center, Beijing Normal University

【机构】 北京师范大学化学学院北京师范大学分析测试中心

【Abstract】 The isothermal kinetics of the cubic to trigonal phase transformation in Mo-rich ZrMo2-xWxO8 was discussed. The conversion could be described with one dimensional nucleation-growth mechanism. The activation energies increased with the W content analyzed by Avrami model and Cardew model. Based on the calculation of Cardew model, the transformation of ZrMo1.8W0.2O8 was dominated by growth, and the transformation of ZrMo1.6W0.4O8, ZrMo1.4W0.6O8 and ZrMo1.2W0.8O8 were dominated by nucleation.

  • 【会议录名称】 中国化学会第二十五届学术年会论文摘要集(下册)
  • 【会议名称】中国化学会第二十五届学术年会
  • 【会议时间】2006-07
  • 【会议地点】中国吉林长春
  • 【分类号】O611.3
  • 【主办单位】中国化学会
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